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MIL-DTL-62461 Transmission AssemblyThis specification covers a transmission with an integral torque converter that consists of the main assembly and a control valve. The transmission assembly will be referred to, herein, by the term \'transmission\'. The transmission is a counter-shaft type with external clutches and a six-speed self-contained unit with the necessary gearing, shafting, spacers, bearings and all other parts required for satisfactory operation \(see 6.1\).

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MIL-DTL-62461E(AT)
3.3.2 Hazardous materials. Asbestos, cadmium, and radioactive materials shall not be
used in this item. Radioactive material is defined by CFR, Title 10, Parts 30 and 40, and other
radioactive material in which specific activity is greater than 0.002 microcuries per gram or the
activity per item equals or exceeds 0.01 microcuries.
3.3.3 Rubber components. Rubber components shall be ozone resistant to the degree
specified in the applicable specification or drawing.
3.4 Operating requirements. The transmission shall meet the operating requirements as
specified in Drawing 12331877 and 3.4.1 through 3.4.3 when coupled with a power source
conforming to MIL-DTL-62462.
3.4.1 Output speed. Minimum output speeds shall be in accordance with table I.
TABLE I. Minimum output speeds.
Forward speed
Reverse speed
No load input speed
(±20 rpm)
Gear range  (rpm minimum)  (rpm minimum)
344
320
1st
1800
518
485
2nd
1800
776
3rd
1800
1170
4th
1800
1999
5th
1800
3003
6th
1800
3.4.2 Oil pressure and flow. The transmission, with an input speed of
1800 ± 20 revolutions per minute (rpm), no load at the output, and a converter out temperature of
200 ± 20 degrees Fahrenheit (°F) (93 ± 11 degrees Celsius (°C)), shall attain the oil pressures and
flows as specified in table II without evidence of leakage or any other damage.
TABLE II. Oil pressure and flows.
Direction
Converter-out  Converter-out
Input
Lube
Clutch
Lube
and
temperature,
speed,
temperature,
pressure,
pressure,
flow, gal/min
°F (°C)
°F (°C)
range
rpm
psi (kPa)
psi (kPa)
(L/min) 1/
1800 ± 20
R-1,2
180-220
17.4 (68)
180-220
180-220
15-40
(1240-1517)
(82-104)
(82-104)
(103-276)
1800 ± 20
N
180-220
20.0 (78)
180-220
180-220
15-40
(1240-1517)
minimum
(82-104)
(82-104)
(103-276)
1800 ± 20
F-1,2,
180-220
17.4 (68)
180-220
180-220
15-40
3,4,5, 6
(1240-1517)
minimum
(82-104)
(82-104)
(103-276)
1/ gal/min = gallons per minute, L/min = liters per minute
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